//#include<stdio.h>
//#include<stdlib.h>
//void fun(int*p1,int*p2)
//{
//	int m = *p1;
//	int n = *p2;
//	*p1 =n;
//	*p2=m;
//}
//int main(void)
//{
//int a = 2;
//int b =3;
//printf("%d,%d\n",a,b);
//fun(&a,&b);
//printf("%d,%d\n",a,b);
//system("pause");
//return 0;
//}